package com.tcs.log.main;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.util.GenericOptionsParser;

import com.tcs.log.map.EtlLogMapper;
import com.tcs.log.reducer.EtlLogReducer;

/**
 * 清洗数据
* @Title: EtlLogMain.java
* @Package com.tcs.log.main
* @author 神经刀
* @date 2018年4月7日
* @version V1.0
 */
public class EtlLogMain {

	public static void main(String[] args) throws Exception  {
		Configuration conf = new Configuration();
		String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
		if (args.length != 2) {
			System.err.println("Usage: MaxTemperature <input path> <output path>");
			System.exit(2);
		}
		Job job = Job.getInstance(conf, "tel log");

		job.setJarByClass(EtlLogMain.class);
		job.setJobName("etl log");

		FileInputFormat.addInputPath(job, new Path(args[0]));
		FileOutputFormat.setOutputPath(job, new Path(args[1]));

		job.setMapperClass(EtlLogMapper.class);
		job.setCombinerClass(EtlLogReducer.class);
		job.setReducerClass(EtlLogReducer.class);
		
		job.setMapOutputKeyClass(Text.class);
	    job.setMapOutputValueClass(IntWritable.class);

	    job.setOutputKeyClass(Text.class);
	    job.setOutputValueClass(IntWritable.class);

		for (int i = 0; i < otherArgs.length - 1; ++i) {
			FileInputFormat.addInputPath(job, new Path(otherArgs[i]));
		}

		FileOutputFormat.setOutputPath(job, new Path(otherArgs[otherArgs.length - 1]));

		System.exit(job.waitForCompletion(true) ? 0 : 1);
	}
}